Version:           4.2.3 (using KDE 4.7.3) 
OS:                Linux

When switching tabs, the tab widget attempts to scroll so that the newly selected tab is in the rightmost visible position, even if the newly selected tab is already completely in view. If the switching is done directly with the mouse (as opposed to selecting a document from the Documents pane, or programmatically from a script), this has the effect of the tab "jumping away from the mouse". Very distracting!


Reproducible: Always

Steps to Reproduce:
1. Open enough files to overflow the tab widget by a factor >2.
2. Scroll the tab widget all the way to the rightmost tab.
3. Click on another tab.

Actual Results:  
The tab widget scrolls so that the newly selected tab is the last visible (first from the right).

Expected Results:  
The tab widget should not be scrolled if the newly selected tab is already completely in view.

I suspect an insufficiently careful implementation of scroll-into-view feature.